質問編集履歴
1
各モデルのリレーションを追記しました！
title
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File without changes
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body
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@@ -74,5 +74,38 @@
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74
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<% end %>
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</div>
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77
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```
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77
78
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79
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group.rb↓
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80
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```
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81
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class Group < ApplicationRecord
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82
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has_many :group_users
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has_many :users, through: :group_users
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84
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has_many :messages
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85
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end
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86
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```
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87
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+
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message.rb↓
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89
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```
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90
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class Message < ApplicationRecord
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belongs_to :user
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92
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belongs_to :group
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93
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end
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94
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```
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95
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+
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96
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user.rb↓
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97
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```
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98
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class User < ApplicationRecord
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has_many :group_users
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100
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has_many :messages
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101
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has_many :groups, through: :group_users
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102
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end
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```
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104
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+
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105
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group_user.rb↓
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106
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```
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107
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class GroupUser < ApplicationRecord
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108
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belongs_to :group
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109
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belongs_to :user
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110
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end
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78
111
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```
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